Was this used by a fireman? Akron Brass made stuff for fire hoses. The house shows no evidence of fire, however with all the bricks and bricks set in concrete in chunks turning up in the yard along with the random concrete slab, my gut is telling me something else was built here.

I spent some time at the Patent website... Feb 24, 1925 was a big issue date for patents. I gave up for now on the website. I need to go back and see If Akron Brass was issued a patent on that date.

Looked up Fire Hose Spanner on Google and even the modern-day spanners look similar to that one. Looks like the mystery is solved. You must be sitting on the site of an old firehouse (or pretty close to it).

Oh well, guess you figured it out! My sister and her husband (he buys/sells at estate sales and flea markets) have been thinking about it and said this:

Been meaning to get back to you on this. Robert is convinced it is a fire hydrant wrench. He thought it from the moment he saw it. I can't find any other type of tool that looks anything like it, either. Here's a link to Wiki that has several pics that might show you the similarity.